<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>忍者大闯关</title>
  <link rel="stylesheet" href="./css.css">
</head>
<body>
  <div class="container">
    <div id="score"></div>
    <canvas id="game" width="375" height="375"></canvas>
    <div id="introduction">按住鼠标伸出一根棍子</div>
    <div id="perfect">双倍 得分</div>
    <button id="restart">再玩一次</button>
  </div>
  <script src="./js.js"></script>
</body>
</html>
